Jay Robertson's specifications include the following:

• Length: 48.77.
• Breadth: 25.50 m.
• Depth of hull: 4.20 m.
• Moulded draft: 2.585 m.
• Legs: 6 (height 51.8 . each/ 1.8 m dia).
• Jack lifting capacity: 4,450 kN each.
• Jack holding capacity: 8,900 kN each.
• Lifting speed: 50 ft. per hour.